{"instruction": "You are an expert in relationship extraction. Please extract relationship triples that match the schema definition from the input. Return an empty list for relationships that do not exist. Please respond in the format of a JSON string.", "schema": ["evaluate for", "conjunction", "used for", "compare"], "input": "In this paper , we improve an unsupervised learning method using the Expectation-Maximization -LRB- EM -RRB- algorithm proposed by Nigam et al. for text classification problems in order to apply it to word sense disambiguation -LRB- WSD -RRB- problems ."}
{"evaluate for": [], "conjunction": [], "used for": [{"subject": "Expectation-Maximization -LRB- EM -RRB- algorithm", "object": "unsupervised learning method"}, {"subject": "Expectation-Maximization -LRB- EM -RRB- algorithm", "object": "text classification problems"}, {"subject": "it", "object": "word sense disambiguation -LRB- WSD -RRB- problems"}], "compare": []}